________（48）A.Experts say that we cannot do that
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________（48）
A.Experts say that we cannot do that just yet.
B.In the near future,intelligent cars will be put into commercial operation.
C.This is the brain of the car.
D.But how does an intelligent car control itself?
E.It completes the processing of the images sent by the cameras within 100 milliseconds.
F.However,it cannot recognize moving people and bicycles on ordinary roads that have no clear markings on them.
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答案：E
空格后句中出现了篇章逻辑词however，因此排除F项（提示：两个转折句不可能接连出现）。E项中的millisecond与空格后句中的second是主题相关词，因此首先关注E项。E项中的代词it在空格前句中有呼应的内容“the virtual driver"，因此E项是正确答案。